CN106333754B - A kind of pure titanium oral cavity micro-implant of Ultra-fine Grained and preparation method thereof - Google Patents
A kind of pure titanium oral cavity micro-implant of Ultra-fine Grained and preparation method thereof Download PDFInfo
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- CN106333754B CN106333754B CN201610838405.1A CN201610838405A CN106333754B CN 106333754 B CN106333754 B CN 106333754B CN 201610838405 A CN201610838405 A CN 201610838405A CN 106333754 B CN106333754 B CN 106333754B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0012—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the material or composition, e.g. ceramics, surface layer, metal alloy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
- A61C8/0025—Self-screwing with multiple threads
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/04—Metals or alloys
- A61L27/06—Titanium or titanium alloys
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/12—Materials or treatment for tissue regeneration for dental implants or prostheses
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- Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Dentistry (AREA)
- Chemical & Material Sciences (AREA)
- Dermatology (AREA)
- Medicinal Chemistry (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Dental Prosthetics (AREA)
- Prostheses (AREA)
Abstract
The invention discloses pure titanium oral cavity micro-implant of a kind of Ultra-fine Grained and preparation method thereof, belong to tooth-planting field, refer in particular to make micro-implant using the pure titanium of Ultra-fine Grained, for solving existing pure titanium micro-implant low intensity, the problem of synosteosis area is small.The micro-implant is made up of the pure titanium of Ultra-fine Grained, a diameter of 2.5mm~3.0mm；The bone inside points of the micro-implant are provided with screw thread of the surface Jing Guo roughening treatment, and the neck of the micro-implant is shiny surface, and bottom is arc surface.Micro-implant is made using the pure titanium material of the Ultra-fine Grained of high intensity, and optimizes micro-implant thread surface form, augmenting bone bonded area while stress reduces.The present invention can effectively increase the intensity and synosteosis area of micro-implant, reduce micro-implant and fracture risk, extend planting body service life.
Description
Technical field
The invention belongs to oral medical field of material technology, it is related to micro-implant, and in particular to a kind of pure titanium mouth of Ultra-fine Grained
Chamber micro-implant and preparation method thereof.
Background technology
Defect of dentition, missing can influence the normal function of stomatognathic system, cause patient's asophia, masticatory function to decline,
Facial deformity and gastrointestinal disease, the body and mind to patient bring strong influence.China's oral health epidemiological investigation display,
The average that 65-74 year age group loses tooth is 9.86, and 35-44 year age group is 0.88.Survey data shows China's tooth body
Defect, missing, which are repaired, has huge clinical demand.Implant denture can significantly improve masticatory function, have the comfortable of similar dermal tooth
Sense, and adjacent teeth is not damaged, known to increasing patient and receive.Latest data shows have in the people of Britain more than 6,000 ten thousand super
Cross 6,000,000 people and possess implant denture；Total population only more than 5,000 ten thousand South Korea, annual planting body implantation amount just reaches 1,000,000；Closely
3 years, China's tooth-planting market annual growth was more than 20%, and year planting body implantation amount is more than 200,000.With China's economy
Fast development, tooth-implanting implantation amount also will quickly increase.
Because pure titanium material has good physicochemical property and excellent biocompatibility, can be formed with bone tissue well
Synosteosis, the making material of clinical conventional planting body is pure titanium at present, but the pure titanium strength of materials is relatively low, planting body bone inner segment
Diameter is often in more than 3.75mm.When patient's agomphosis diastema is smaller, when cheek-tongue side bone amount is less, tend not to straight using bone inner segment
Planting body of the footpath more than 3.75mm or diameter and are repaired using micro-implant in 3.0-3.75mm narrow neck planting body.Micro- plantation
Body refers to Zhi Jing≤3.0mm planting body, and a diameter of 2.7mm~3.0mm of micro-implant of commercialization, making material mainly has pure
Titanium or titanium alloy.Pure titanium micro-implant is due to the relatively low mechanical strength of pure titanium, and diameter is smaller in addition, and planting body easily occurs and fractures,
Limit its clinical practice.Although titanium alloy micro-implant increases in intensity, the anti-risk that fractures of micro-implant is reduced,
But the purer titanium of biocompatibility of titanium alloy is poor.Further, since micro-implant diameter is small, with bone tissue contact area compared with standard straight
Footpath planting body is small, and osseointegration intensity is relatively low, the loosening of micro-implant easily occurs, comes off.
The pure titanium material of Ultra-fine Grained is to carry out large plastometric set such as channel pressings method to pure titanium material to handle, and makes its crystal grain
Refinement, in the case where not introducing other elements so that the mechanical property of material significantly improves.Baili An etc. exist
《Materials Science and Engineering C》On publish an article, the passage such as 4 passage Bc paths is being carried out to pure titanium
Extruding, its crystal grain are refined as 200nm from 30 μm, and yield strength rises to 772MPa from 300MPa, and Vickers hardness carries from 1499MPa
Height arrives 2450MPa.For planting body made of the pure titanium of Ultra-fine Grained after roughening treatment, surface topography, hydrophily are preferable, and have
Good biocompatibility and bone contact ratio.Micro-implant is made using the pure titanium material of Ultra-fine Grained, improves the machine of micro-implant
Tool intensity, but still need solve the problems, such as that micro-implant osseointegration intensity is low.The form Design of planting body can influence planting body
Synosteosis area and stress distribution, and then influence Osseointegrated implants performance.The form Design of planting body includes planting body
Diameter and length, Design of Screw Thread etc..Limited by micro-implant implantation region bone amount, the optimization to micro-implant Design of Screw Thread compared with
The optimization of diameter and length more has clinical meaning.Therefore, solves the key issue of the less micro-implant reparation of agomphosis diastema
It is：How to improve micro- planting material intensity and increase the bonded area of planting body and bone tissue.
The content of the invention
In order to improve micro-implant intensity, the risk to be fractureed during use is reduced, increases micro-implant surface area, is improved
Osseointegration intensity, the invention provides pure titanium oral cavity micro-implant of a kind of Ultra-fine Grained and preparation method thereof.
The present invention is to be achieved through the following technical solutions：
A kind of pure titanium oral cavity micro-implant of Ultra-fine Grained, the micro-implant are made up of the pure titanium of Ultra-fine Grained, micro-implant bone inner segment
A diameter of 2.5mm~3.0mm, micro-implant bone inner segment are helicitic texture, and thread depth is 0.3~0.4mm.
The bone inner segment partial threads of the micro-implant are shaped as V-arrangement, trapezoidal, rectangle, support shape or counter support shape.Screw thread
Species be single thread, double thread or three screw threads.
The pitch of micro-implant bone inner segment partial threads is 0.6mm~1.2mm.
The pitch of micro-implant bone inner segment partial threads is 0.67mm.
Micro-implant bone inner segment part surface passes through roughening treatment, and the mode of roughening treatment is sandblasting, acid etching or differential of the arc oxygen
Change.Its purpose increases surface area, increases osseointegration intensity to improve micro-implant surface roughness.
The gum portion of the micro-implant is divided into shiny surface, and bottom is arc surface.
The invention also discloses the method for preparing the pure titanium oral cavity micro-implant of above-mentioned Ultra-fine Grained, comprise the following steps：
1) a diameter of 2.5mm~3.0mm of bone inner segment micro-implant parametrization thread model is established, with ANSYS
The softwares of Workbench 15.0, carry out the bivariate optimization of thread depth and screw thread distance, and object function is that planting body is implanted into section
The equivalent stress of surface area and bone tissue；
2) micro-implant after thread depth and screw thread distance optimization is processed using the pure titanium of Ultra-fine Grained.
Planting body static strength experiment is carried out according to ISO14801 standards, obtains Ultra-fine Grained micro-implant maximal destruction intensity
Value, contrasted with current clinical conventional equivalent diameter micro-implant maximal destruction intensity level, Ultra-fine Grained micro-implant destroys strong
Degree obtains the pure titanium oral cavity micro-implant of Ultra-fine Grained higher than conventional equivalent diameter micro-implant breakdown strength 20% clinical at present.
Compared with prior art, the present invention has technique effect beneficial below：
The pure titanium oral cavity micro-implant of Ultra-fine Grained disclosed by the invention, is made up of the pure titanium of Ultra-fine Grained, and a diameter of 2.5mm~
3.0mm, thread depth are 0.3mm~0.4mm, and are threaded in the bone inside points of micro-implant, use the super of high intensity
The pure titanium material of fine grain makes micro-implant, and optimizes micro-implant thread surface form, can be in the same of augmenting bone bonded area
When reduce stress, so as to effectively increase the intensity of micro-implant, reduce the risk that fractures of micro-implant, extend micro-implant
Service life.
Further, the present invention optimizes to the screw thread distance of the pure titanium micro-implant of Ultra-fine Grained, thread pitch 0.6mm
~1.2mm, the thread parameter are designed to increase micro-implant synosteosis area while stress is reduced.
Brief description of the drawings
Fig. 1 is the outline drawing of 2.5mm diameter criteria screw thread micro-implants；
Fig. 2 is the outline drawing of the 2.5mm diameter thread micro-implants of optimization design of the present invention；
Fig. 3 is the outline drawing of 3.0mm diameter criteria screw thread micro-implants；
Fig. 4 is the outline drawing of the 3.0mm diameter thread micro-implants of optimization design of the present invention；
Fig. 5 is 2.5mm diameter micro-implant load-displacement curves；
Fig. 6 is a diameter of pure titanium micro-implant pictorial diagram of 2.5mm Ultra-fine Graineds produced by the present invention.
In figure, 1 is micro-implant bone inner segment part.
Embodiment
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
The pure titanium oral cavity micro-implant of Ultra-fine Grained disclosed by the invention, the micro-implant are made up of the pure titanium of Ultra-fine Grained, micro- plantation
A diameter of 2.5mm~the 3.0mm of body bone inner segment, micro-implant bone inner segment part 1 are helicitic texture, thread depth is 0.3~
0.4mm, the pitch of screw thread is 0.6mm~1.2mm.
Preferably, screw thread is shaped as V-arrangement, trapezoidal, rectangle, support shape or counter support shape.
Preferably, the species of screw thread is single thread, double thread or three screw threads.
Preferably, the pitch of screw thread is 0.67mm.
Referring to Fig. 6, for obtained a diameter of pure titanium micro-implant pictorial diagram of 2.5mm Ultra-fine Graineds.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, Fig. 1 is the bone inner segment diameter 2.5mm before form optimization, segment length 10mm in bone
Micro-implant structure chart, Fig. 2 are the bone inner segment diameter 2.5mm after form of the present invention optimization, segment length 10mm micro-implants in bone,
Fig. 3 is the bone inner segment diameter 3.0mm before form optimization, and segment length 10mm micro-implant structure charts in bone, Fig. 4 is form of the present invention
Bone inner segment diameter 3.0mm after optimization, segment length 10mm micro-implants in bone, as can be seen from the figure：Micro- kind after form optimization
The thread depth increase of implant, many threads increase, and planting body bone contact area substantially increases.
Embodiment 1
Step A) establish diameter 2.5mm, segment length 10mm micro-implant thread depth and screw thread are apart from bilateral amount in bone
Parameterized model, with the softwares of ANSYS Workbench 15.0, carry out the bivariate optimization of thread depth and screw thread distance,
Object function is planting body and bone tissue contact area and the maximum equivalent of bone tissue.Choose ANSYS Workbench
DesignXplorer optimized parameters, thread depth 0.3mm, screw thread distance are 0.67mm, are planted before relatively optimizing after tread optimization
Body synosteosis area improves 18%, and the maximum equivalent of cortex bone declines 13.8%, and cancellous bone declines 7.8%.
Step B) the channel pressings method such as use to prepare the pure titanium of Ultra-fine Grained, the interior angle for extruding grinding tool is 120 °, and exterior angle is
20°；At room temperature, the extruding of 4 passage Bc paths, extruding rate 0.5mm/s are carried out.After the completion of prepared by the pure titanium material of Ultra-fine Grained, fortune
The micro-implant of form optimization is processed into numerically controlled machine tool.
Step C) according to ISO14801 standards, it is pure to the pure titanium micro-implant of 2.5mm diameter Ultra-fine Graineds and 2.5mm diameter level Four
Titanium micro-implant carries out Mechanics Performance Testing, every group of 5 test specimens, obtains two groups of micro-implant maximal destruction intensity, and united
Meter analysis.The maximal destruction intensity of the pure titanium micro-implant of Ultra-fine Grained is 327.85 ± 21.18N, and the pure titanium micro-implant of level Four is
197.39 ± 11.49N, the maximal destruction intensity of the pure titanium micro-implant of Ultra-fine Grained improve 66% compared with control group.
As can be seen from Figure 5：The breakdown strength of the pure titanium micro-implant of Ultra-fine Grained apparently higher than the pure titanium micro-implant of level Four,
And there is more preferable ductility.
In summary, the present invention makes micro-implant using the pure titanium material of Ultra-fine Grained of high intensity, and optimizes micro-implant
Thread surface form, augmenting bone bonded area while bone tissue stress reduces.The present invention can effectively increase micro-implant
Intensity and synosteosis area, reduce micro-implant and fracture risk, extend planting body service life.
Embodiment 2
Step A) establish diameter 3.0mm, segment length 10mm micro-implant thread depth and screw thread are apart from bilateral amount in bone
Parameterized model, with the softwares of ANSYS Workbench 15.0, carry out the bivariate optimization of thread depth and screw thread distance,
Object function is planting body and bone tissue contact area and the maximum equivalent of bone tissue.Choose ANSYS Workbench
DesignXplorer optimized parameters, thread depth 0.35mm, screw thread distance are 0.72mm, are planted before relatively optimizing after tread optimization
Implant synosteosis area improves 23%, and the maximum equivalent of cortex bone declines 15.4%, and cancellous bone declines 7.1%.
Step B) the channel pressings method such as use to prepare the pure titanium of Ultra-fine Grained, the interior angle for extruding grinding tool is 120 °, and exterior angle is
20°；At room temperature, the extruding of 4 passage Bc paths, extruding rate 0.5mm/s are carried out.After the completion of prepared by the pure titanium material of Ultra-fine Grained, fortune
The micro-implant of form optimization is processed into numerically controlled machine tool.
Step C) according to ISO14801 standards, it is pure to the pure titanium micro-implant of 3.0mm diameter Ultra-fine Graineds and 3.0mm diameter level Four
Titanium micro-implant carries out Mechanics Performance Testing, every group of 5 test specimens, obtains two groups of micro-implant maximal destruction intensity, and united
Meter analysis.The maximal destruction intensity of the pure titanium micro-implant of Ultra-fine Grained is 545.73 ± 28.96N, and the pure titanium micro-implant of level Four is
352.47 ± 18.61N, the maximal destruction intensity of the pure titanium micro-implant of Ultra-fine Grained improve 54% compared with control group.
Claims (6)
1. a kind of pure titanium oral cavity micro-implant of Ultra-fine Grained, it is characterised in that the micro-implant is made up of the pure titanium of Ultra-fine Grained, micro- plantation
A diameter of 2.5mm~the 3.0mm of body bone inner segment, micro-implant bone inner segment part (1) are helicitic texture, thread depth is 0.3~
0.4mm；The pitch of screw thread is 0.6mm~1.2mm；The gum portion of the micro-implant is divided into shiny surface, and bottom is arc surface.
2. the pure titanium oral cavity micro-implant of Ultra-fine Grained according to claim 1, it is characterised in that the bone inner segment of the micro-implant
Partly the screw thread of (1) is shaped as V-arrangement, trapezoidal or rectangle.
3. the pure titanium oral cavity micro-implant of Ultra-fine Grained according to claim 1 or 2, it is characterised in that the species of screw thread is single
Screw thread, double thread or three screw threads.
4. the pure titanium oral cavity micro-implant of Ultra-fine Grained according to claim 1, it is characterised in that the pitch of screw thread is
0.67mm。
5. the pure titanium oral cavity micro-implant of Ultra-fine Grained according to claim 1, it is characterised in that micro-implant bone inner segment part
(1) roughening treatment is passed through on surface, and the mode of roughening treatment is sandblasting, acid etching or differential arc oxidation.
6. prepare the method for the pure titanium oral cavity micro-implant of Ultra-fine Grained described in any one in Claims 1 to 5, it is characterised in that
Comprise the following steps：
1) a diameter of 2.5mm~3.0mm of bone inner segment micro-implant parametrization thread model is established, with ANSYS
The softwares of Workbench 15.0, carry out the bivariate optimization of thread depth and screw thread distance, and object function is that planting body is implanted into section
The equivalent stress of surface area and bone tissue；
2) micro-implant after thread depth and screw thread distance optimization is processed using the pure titanium of Ultra-fine Grained.
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| CN112515793B (en) * | 2019-09-19 | 2024-04-12 | 张家昌 | Tooth implantation external member |
| CN113144284B (en) * | 2021-05-26 | 2023-11-21 | 湖南华锐科技集团股份有限公司 | Zinc-titanium composite surface bone implant and preparation method thereof |
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| US7799062B2 (en) * | 2004-11-30 | 2010-09-21 | Stryker Trauma S.A. | Self-guiding threaded fastener |
| CN101690680B (en) * | 2009-02-11 | 2012-07-04 | 中国人民解放军第四军医大学口腔医院 | Expansive orthodontic anchorage implant |
| CN102319125B (en) * | 2011-08-01 | 2013-04-10 | 四川大学 | Anti-loosing and corrosion-proof dental-implant central screw |
| CN103981472B (en) * | 2014-05-06 | 2016-01-06 | 西北工业大学 | A kind of Equal-channel Angular Pressing prepares the method for the pure titanium of Ultra-fine Grained |
| CN104146783A (en) * | 2014-08-27 | 2014-11-19 | 吉林大学 | Degradable micro-implant anchorage device |
| CN104264203B (en) * | 2014-09-25 | 2017-09-15 | 中国人民解放军第四军医大学 | A kind of pure titanium of differential arc oxidation Ultra-fine Grained and its preparation method and application |
| CN205514981U (en) * | 2016-02-01 | 2016-08-31 | 张正宜 | Orthodontic body structure |
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